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Old 07-12-2012, 10:43 AM   #121
Mango
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Originally Posted by ct323i View Post
I did find a cracked lower intake boot and replaced both that and the upper intake boot a couple months ago. The F connector seemed okay.

SAP, never replaced that to my knowledge.

I do have a small crack in the vent hose from Valve Cover to Oil Separator, my friend told me that should just be an exhaust vent and shouldn't matter that much... do you think that could be a cause of the misfire?
You're confusing my words. Slow down a little. (Many others have confused this too so don't worry)

When I said vacuum line to the SAP, I meant just that. The vacuum line itself (not the sap)

Also as far as the F-connector--again vacuum line TO the f-connector. Not the f-connector itself. There's about two inches of vacuum line at the F-connector which connects to a hard plastic line. Check the soft line. Also check the soft line at the fuel pressure regulator at the fuel filter. And YES a crack in the plastic tube from the valve cover to CCV can cause a vacuum leak!!!!!!!
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Old 07-12-2012, 10:51 AM   #122
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Quote:
Originally Posted by E46Mango View Post
You're confusing my words. Slow down a little. (Many others have confused this too so don't worry)

When I said vacuum line to the SAP, I meant just that. The vacuum line itself (not the sap)

Also as far as the F-connector--again vacuum line TO the f-connector. Not the f-connector itself. There's about two inches of vacuum line at the F-connector which connects to a hard plastic line. Check the soft line. Also check the soft line at the fuel pressure regulator at the fuel filter. And YES a crack in the plastic tube from the valve cover to CCV can cause a vacuum leak!!!!!!!
Oh ****. Maybe it's that! I probably made the crack worse when I moved it to access the camshaft sensor.
I'll have to check all those other lines too. Thanks!
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Old 07-12-2012, 10:58 AM   #123
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Oh ****. Maybe it's that! I probably made the crack worse when I moved it to access the camshaft sensor.
I'll have to check all those other lines too. Thanks!
Ok cool check them. The entire CCV system needs to be replaced really. Way too many possibilities to cause vacuum leaks there..
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Old 07-12-2012, 11:35 AM   #124
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Can you share some experience how you did that? I was stuck by the wiring harness. The pump relay is visible, but the horn is definately unaccessible. I think I need to remove the 3 black harness plugs from the white housing. But they are damn tight. There would be some sort of locking tabs but I just can't find them. How do you guys do it?
Sorry for the delay. I used a screwdrive to release the locking clips on the side of the relays, and got my fingers back there enough to pull them out. Just takes a good amount of patience. I was stumped by the harness plugs as well...couldn't find how to release them.
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Old 07-14-2012, 08:40 PM   #125
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Just bringing some other soft fail pump symptoms to everyone's attention - http://forum.e46fanatics.com/showthread.php?t=930767
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Old 07-15-2012, 12:57 PM   #126
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I'm at 155k with original pump but ordered a new one through bmwa jic this one decides to kick the bucket when I'm at work.
Quick question I had my alternator fixed a year ago cause it died on me do they also change the voltage regulator as well or is that something different? Cause if they didn't so I can order it. Thanks
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Old 07-15-2012, 01:44 PM   #127
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Your are a wise man!

As for your alternator, it appears that most of the problems are regulator/brush problems depending on the version of alternator. If it was repaired a while back, I would assume this was resolved?

The alternator usually will give you some notice or warning if it goes, you can usually jump start or roll start your car to get going, but when the fuel pump goes, it puts you in tennis shoe mode immediately either due to a soft fail and running out of gas with 1/4 left, or quitting all together when you least expect it.
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Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 07-15-2012, 02:10 PM   #128
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Is there any way to find out if it was replaced?
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Old 07-15-2012, 08:08 PM   #129
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It being the fuel pump or the Voltage regulator?

Fuel pump would be easier to determine than the Voltage regulator.
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Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 07-15-2012, 08:35 PM   #130
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I replaced my fuel pump on sat, snag I have to say I did notice an improvement with the hot weather and my car seeming to hesitate like the ac was on , even when it was not...the new pump cut out alot of that and I got to say its the best 120 I spent on this car !

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Old 07-15-2012, 09:42 PM   #131
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aeorozco,

Did you replace the pump as a preventive measure or were you left stranded?

Glad your hesitation seems to have improved, seems another symptom of the "soft fail"?

Thanks for updating your experience, make sure you get your filter changed as well if you have not replaced it in a long time.
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Fuel pump failures - http://forum.e46fanatics.com/showthread.php?t=929501

Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temps, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

E46/E39 GM5 Door Lock Info - www.bmwgm5.com

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Old 07-16-2012, 04:33 PM   #132
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My misfire problem turned out to be a bad coil, yes a brand new coil was bad!

I bought the BavAuto (Bavarian Autosport) High-Performance Ignition Coil Set to replace my coils just for preventative maintenance and it turned out that was causing the misfire. I called them up and told them and they are shipping me one new one free but I'm already out 7 hours of labor and had to buy one OEM coil to throw on there so I could drive the car.

Over 300 miles later no CEL, no misfires and car running perfectly. I'm tempted to leave the OEM coil on and not mess with anything now.
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Old 07-16-2012, 04:43 PM   #133
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^I have those same Bav Autosport coils, and did not notice any difference in performance, and will suredly use the original BMW coils next time, especially after reading that.
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Old 07-16-2012, 05:25 PM   #134
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Is it better to change the pump when the gas tank is almost empty or it does not matter?
Will I need a new clamp or be able to reuse old one?
Anything to avoid incorrect fuel gauge reading after the replacement?
Thanx
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Old 07-16-2012, 06:01 PM   #135
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OH MAN. I might be trolling. . . How about when someone asks a question thats already been answered IGNORE THEM!!! How much you wanna bet that at some point this week someone is going to post. . . "HELP CAR WON'T START!! I NEED HELP!" No offense to you mango. . . But your enabling them to be lazy. But I do enjoy reading these threads because they last soooo long.
p.s. Original pump 91k. Not too worried right now either. Car has been sitting on jack stands waiting for a flex disk for over a week. and BOOM there was a shop 10 min from me that keep em in stock. . . Saving that number. For those in New England, instead of paying overnight shipping prices, Check out CPI, car parts international. They don't advertise to the public, they serve mostly dealers and shops, but more than happy to satisfy your euro car needs. I have fallen in love anew.
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Old 07-16-2012, 06:37 PM   #136
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OH YEA!!! If you have had a problem, created a thread, and received input that helped you solve the problem. . . PLEASE go ahead and state what you did to fix it. What was the root cause and thank the people that helped you get there. Even if you had a shop do the work. State how much it cost you and what they charged you for. For those that aren't DIYers it could help them know how much it cost to get it fixed and telling a shop what to fix rather than paying them to figure it out, i would imagine, costs a hell of a lot more.
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Old 07-16-2012, 11:10 PM   #137
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Ok bad news, my dads 2005 760i is in the shop with fuel pump issues at only 75,000 miles. Was told it's nearly 7k to replace. Guess there are two pumps as well in the V12... He's not even sure it worth doing although it'll be hard to sell if it dosent start
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Old 07-16-2012, 11:15 PM   #138
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Ok bad news, my dads 2005 760i is in the shop with fuel pump issues at only 75,000 miles. Was told it's nearly 7k to replace. Guess there are two pumps as well in the V12... He's not even sure it worth doing although it'll be hard to sell if it dosent start
WHAT? 7K for a fuel pump????? No ####ing way, they can't be THAT greedy!
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Old 07-16-2012, 11:18 PM   #139
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That's what I was thinking... I'll call an Indy shop to see if that's legit. My dads cautious about Indy shops though
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Old 07-16-2012, 11:22 PM   #140
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So reading through 7 pages of this is nice and all, but how about a link to a DIY in the OP, OP? That would be nice, since you are urging us all to do it.
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